Old PWM API
[PWM driver]

This API has strong limititations, so it has been deprecated. More...

Functions
void	pwm_setPolarity (PwmDev dev, bool pol)
	Set PWM polarity of pwm dev.
void	pwm_setDuty (PwmDev dev, pwm_duty_t duty)
	Set duty of PWM channel dev.
void	pwm_setFrequency (PwmDev dev, pwm_freq_t freq)
	Set frequency of PWM channel dev at freq.
void	pwm_enable (PwmDev dev, bool state)
	Enable/Disable PWM channel dev.
void	pwm_init (void)
	Initialize the PWM driver.

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Detailed Description

This API has strong limititations, so it has been deprecated.

It is active by default for backward compatibility reasons, but for new projects please use the new PWM API. In order to disable this API, check CFG_PWM_ENABLE_OLD_API.

See also:

PWM API

CFG_PWM_ENABLE_OLD_API

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Function Documentation

void pwm_enable	(	PwmDev	dev,
		bool	state
	)

Enable/Disable PWM channel dev.

Parameters:

	dev	PWM channel.
	state	if true the PWM on dev is activated, if false is disabled.

Definition at line 103 of file pwm.c.

void pwm_init

(

void

)

Initialize the PWM driver.

Warning:

all available PWM channels are initialized.

Definition at line 117 of file pwm.c.

void pwm_setDuty	(	PwmDev	dev,
		pwm_duty_t	duty
	)

Set duty of PWM channel dev.

The current output frequency will be maintained.

Parameters:

	dev	PWM channel.
	duty	the new duty cycle.

Definition at line 69 of file pwm.c.

void pwm_setFrequency	(	PwmDev	dev,
		pwm_freq_t	freq
	)

Set frequency of PWM channel dev at freq.

Parameters:

	dev	PWM channel.
	freq	new frequency, in Hz.

Warning:

This function has to be called with PWM disabled, otherwise the output value will be undefined. The current duty cycle value will be lost, after calling this function the duty cycle have to be set again.

Definition at line 93 of file pwm.c.

void pwm_setPolarity	(	PwmDev	dev,
		bool	pol
	)			[inline]

Set PWM polarity of pwm dev.

Parameters:

	dev	PWM channel.
	pol	if false positive polarity pulses are generated, if true negative polarity pulses are generated.

Warning:

This function has to be called with PWM disabled, otherwise the output value will be undefined.

Definition at line 152 of file pwm.h.